Red Hat Enterprise Linux 8 released

I consider it a good thing that RHEL is removing KDE. It must already be a niche use case to even run a RHEL workstation, and by focusing their effort on Gnome to fulfill that niche, it's more likely that they can provide a stable Gnome experience.

If you want to run KDE, chances are you would be better served by using a distribution that has a similar focus on KDE.

Removing RCS is probably due to the fact that finding people who are familiar with RCS is getting harder and harder. Git's much more popular and does the same thing better.

I've seen RCS on some legacy servers for local repositories, and what usually happens is that it gets replaced with git since neither I nor my colleagues have any reason to keep using RCS.

As far as chrony vs ntpd goes, my impression of the consensus is that chrony is considered higher-quality, though I don't know exactly why. I've been using it in production on RHEL7 already and it seems fine, so there's not much to worry about.